Table 3 Substance use before and during pregnancy among RPGEH Prenatal Cohort Participants compared to Non-Participants in Kaiser Permanente Northern California
Overall Denominator (n = 87,928) | Participants (n = 16,584) | Non-Participants (n = 71,344) | |
|---|---|---|---|
Early Start Data | N (%) | ||
Smoking in 12 Months before Pregnancy | |||
Never | 78,710 (89.5) | 14,683 (88.5) | 64,027 (89.7) |
Monthly or Less | 2,944 (3.4) | 623 (3.8) | 2,321 (3.3) |
Weekly | 1,304 (1.5) | 230 (1.4) | 1,074 (1.5) |
Daily | 4,747 (5.4) | 1,016 (6.1) | 3,731 (5.2) |
Unknown | 223 (0.2) | 32 (0.2) | 191 (0.3) |
Smoking since Pregnancy | |||
Never | 85,166 (96.9) | 16,010 (96.5) | 69,156 (96.9) |
Monthly or Less | 789 (0.9) | 159 (1.0) | 630 (0.9) |
Weekly | 537 (0.6) | 117 (0.7) | 420 (0.6) |
Daily | 1,196 (1.3) | 267 (1.6) | 929 (1.3) |
Unknown | 240 (0.3) | 31 (0.2) | 209 (0.3) |
Alcohol in 12 Months before Pregnancy | |||
Never | 28,267 (32.2) | 4,202 (25.3) | 24,065 (33.7) |
Monthly or less | 39,589 (45.0) | 7,908 (47.7) | 31,681 (44.4) |
Weekly | 18,102 (20.6) | 4,058 (24.5) | 14,044 (19.7) |
Daily | 1,429 (1.6) | 327 (2.0) | 1,102 (1.6) |
Unknown | 541 (0.6) | 89 (0.5) | 452 (0.6) |
Alcohol since Pregnancy | |||
Never | 78,796 (89.6) | 14,551 (87.7) | 64,245 (90.1) |
Monthly or Less | 6,780 (7.7) | 1,517 (9.2) | 5,263 (7.3) |
Weekly | 1,423 (1.6) | 344 (2.1) | 1,079 (1.5) |
Daily | 179 (0.2) | 34 (0.2) | 145 (0.2) |
Unknown | 750 (0.9) | 138 (0.8) | 612 (0.9) |
Use of Prescription Drug in 12 Months before Pregnancya | |||
No | 71,212 (81.0) | 13,067 (78.8) | 58,145 (81.5) |
Yes | 16,066 (18.3) | 3,403 (20.5) | 12,663 (17.7) |
Unknown | 650 (0.7) | 114 (0.7) | 536 (0.8) |
Use of Prescription Drug since Pregnancy | |||
No | 83,680 (95.2) | 15,726 (94.8) | 67,954 (95.3) |
Yes | 3,871 (4.4) | 799 (4.8) | 3,072 (4.3) |
Unknown | 377 (0.4) | 59 (0.4) | 318 (0.4) |
Use of Illegal Drug in 12 Months before Pregnancyb | |||
No | 79,954 (90.9) | 14,790 (89.1) | 65,164 (91.3) |
Yes | 7,149 (8.1) | 1,506 (9.1) | 5,643 (7.9) |
Unknown | 825 (1.0) | 288 (1.8) | 537 (0.8) |
Use of Illegal Drug since Pregnancy | |||
No | 85,202 (96.9) | 15,878 (95.7) | 69,324 (97.2) |
Yes | 2,033 (2.3) | 414 (2.5) | 1,619 (2.3) |
Unknown | 693 (0.8) | 292 (1.8) | 401 (0.5) |